长江三峡库区滑坡发育与河道演变的地质过程分析

陈国金; 李长安; 陈松; 邵磊

doi:10.3799/dqkx.2013.040

Volume 38 Issue 2

Mar. 2013

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CHEN Guo-jin, LI Chang-an, CHEN Song, SHAO Lei, 2013. Landslide Development and the Geological Process of Watercourse Evolution in the Three Gorges Reservoir Area. Earth Science, 38(2): 411-416. doi: 10.3799/dqkx.2013.040

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CHEN Guo-jin, LI Chang-an, CHEN Song, SHAO Lei, 2013. Landslide Development and the Geological Process of Watercourse Evolution in the Three Gorges Reservoir Area. Earth Science, 38(2): 411-416. doi: 10.3799/dqkx.2013.040

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Landslide Development and the Geological Process of Watercourse Evolution in the Three Gorges Reservoir Area

doi: 10.3799/dqkx.2013.040

1.
Hubei Geological Environment Station, Jingzhou434020, China
2.
Three Gorges Research Center for Geo-Hazard of Ministry of Education, China University of Geosciences, Wuhan430074, China
3.
Wuhan Architectural Design Institute, Wuhan430014, China

Received Date: 2012-04-15
Publish Date: 2013-03-01

Abstract

Abstract

According to the regional survey for geo-hazards, thousands of landslides occurred in the Three Gorges reservoir area. Chronology studies show that these landslides mostly occurred after the Mid-Pleistocene and could be divided in 3 stages, namely, (41-37)×10⁴ aBP, (31-27)×10⁴ aBP and (17-5)×10⁴ aBP. These landslides mostly occurred in the interglacial period and could be well related with the regional uplift and geological process of the formation of river landform in the Three Gorges area. Based on these, we conclude that the occurrence of the landslides can be well correlated with tectonic uplift, climate change, rapidly down-cutting and breakthrough development in the Yangtze River. It is inferred that the cut-through timing of the Three Gorges probably be Early Pleistocene mainly owing to the loss of landslides which ages older than 54×10⁴ aBP.
- Three Gorges,
- landslides,
- evolution of the river channel,
- geological process,
- engineering geology

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References

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Landslide Development and the Geological Process of Watercourse Evolution in the Three Gorges Reservoir Area

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